Time or speed controlled delayed action relay for strip material classifiers



Oct. 8, 1940. LADRACH 2,217,342

TIME on SPEED CONTROLLED-DELAYED ACTION RELAY FOR STRIP MATERIAL CLASSIFIERS FilQd May 19, 1938 3 Shuts-Sheet l FIG. 1

OOO 00000600 3 Shuts-Sheet 2 4'.- -A. G. LADRACH "'l'IIE OR SPEED CONTROLLED-DELAYED ACTION RELAY FOR STRIP MATERIAL CLASSIFIERS Filed May 19, 1938 He l mm C an a m 3L Q @a Z N O R R A giiiz! A. G. LADRACH 2,217,342 HIE OR SPEED CONTROLLED DELAYED ACTION RELAY FOR STRIP MATERIAL CLASSIFIERS Filed May 19,4938 3 Shuts-Sheet .3

Oct. 8, 1940.

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CONTROL METER awe/141 04,

AARON G. LADRAGH w U I Patented a. 8.1 940 2 2 7 I UNITED STATES PATENT OFFICE 'rmn'; on srnan CONTROLLED DELAYED ACTION .RELQY. FOR. s'rarr MATERIAL cmssrrmas Aaron G. Ladracli, Akron, Ohio Application May 19, 1938, Serial No. 208,851

2 Claims. (01. 209-72) This invention relates to time or speed con- (Figure 1), so that one cannot oppose the other trolled relays. I a in moving a pin I4.

' The general purpose of the invention is to pro- Each plunger 20 is carried by slides 2|, 2|

vide an improved time or speed controlled relay mounted on supports 22, 22 and connected to a whereby one or more mechanisms, as for example, movable armature 23 operable axially toward sheet steel classifiers arranged along a production drum I3 by a solenoid 24, springs 25; 26 being proline may be operated a determinate interval after vided for retracting plungers 20 upon de-energithe operation of one or more other mechanisms, zation of the solenoids 24, Actuation of a solenoid as for example, a thickness gauge provided with 24 will cause plunger 20 to adjust a pin I4, as

means for manifesting oil-gauge, either heavy or shown in Figure 4, or a successionof pins. 10 light, sheet steel passing along said production There is also associated with the drum I3 one line, or more devices to be actuated by an adjusted pin The foregoing and other purposes of the invenor pins. These may comprise control switches tion are attained-in the device illustrated in the shown at 26, 26. These switches may be pivoted accompanying drawings and described below. It at 21, 21 and may be guided in their movements 15 is to be understood that theinvention is not by retaining screws 28 and washers 29, the limited to the specific form thereof shown and screws 28 being extended through comparatively described. large openings 30 in switch 26. The control Of the accompanying drawings: switches 26 are so set respecting the sides of the Figure 1 is a plan view, partly broken away, of drum as to be engaged and depressed by pins I4 20 arelay embodying the invention. which have been adjusted by plungers 20 (see Figure 2 is a sectional front elevation thereof. Figures 3 and 5). The engaged portions 26, 26 Figure 3 is an enlarged sectional end elevation are of such -width as to be engaged by any sucthereof. ceeding adjusted pin before a leading adjusted Figure 4 is a section on line 4-4 of Figure 3. pin has passed out of engagement with the 25 Figure 5 is a section on line 66 oi. Figure 3, it h, and Switches 26 carry pins 3I adapted to engage the Fi u e 5 is a di amm i View Showing a yp upper of two flexible spring contact members 32 cal installation of t e e y in a Sheet Steel p and 33 to depress the same into effective electrical duction line. contact with each other, the contact member be- 30 Refe i to Figures 1 t 5 0f the drawings, the ing adapted to return switches 26 to their normal numeral l0 desisn as i housinginwhleh positions after passage of an adjusted pin I4. y be mounted brackets II, I l in whieh 1S .1 Contact members 32 and 33 are suitably mounted nailed Shaft I! On which is ec time in insulated relation in mountings 34. The switch speed controlled relay drum I3. units are mounted on brackets II, I I angularly 35 Arranged about the P r p y of drum I3 is 2. adjustable about shaft I2 and adapted to be seseries of axially slidable pins I4, I4 which are cured by screws II in various positions of adjustmounted therein as best shown in Figure 4 in ment about drum I3 respecting plungers 20 to vary axial bores I5, I6, the pins being substantially the delayed action of the relay. 40 longer than the width of the drum for a purpose In order to return pins I4 to central positions 40 which Will pp and p e e y being irictionout of position to actuate switches 26 and to ally held in any positions, to which they are adpositions from which they may again be adjusted justed therein as by means of balls I6 retained in by plungers 20, cams 35, 36 are provided for enradial bores I1 inwardly of the pins I4 and urged gaging the rounded ends of projecting pins and against the pins by springs I 6. The projecting pushing the pins back to their normal positions. ends of pins I4 preferably are rounded as shown. A panel for electrical connections may be pro- Associated with drum I3 are one or more devided in the housing ID, as shown at 36, to which vices I9, I3 for modifying the axial positions of leads may be extended from a suitable leads conpins I4. These devices may be identical and each duit 31. The leads are connected to solenoids and may comprise a plunger 20 of wedge-shape to switches as will be described with reference to 50 arranged to be thrust axially against the project- Figure 6. ing ends of pins I4. Where more than one such Shaft I2 is arranged to be driven through a plunger is used, the plungers 20 may be mounted suitable reduction 38 by a sprocket 39 which may at opposite sides of the drum, as shown. Prei'erbe driven by a chain 40, in turn driven in synably the plungers are oil-set from each other chronism with work conveyors, time-control 55 mechanisms or other time or speed controlling devices relating the delayed action of the present device to the delayed operations desired to be performed on the work.

As shown in Figure 6, the present device may be associated with a gauge and classifier control meter and with classifiers in a steel sheet production unit, the delayed action relay to be driven in synchronism with the speed at which the work is advanced. The continuous gauge G of any type producing variations in an electrical circuit corresponding to gauge variations is electrically connected to the classifier control meter M of a known type to which power may be supplied by power lines P and from which leads may be extended to solenoids l9, [9 through panel 36 in casing Hi, the meter M and solenoids being so connected that one solenoid is actuated on passage of light stock and the other is actuated on passage or heavy stock, neither being actuated when on gauge stock within allowable variations "is passing through the gauge.

From the gauge G, the stock may pass between shearing rollers S, the cut sheets being received on conveyor and passing to a classifier K-l, then to another conveyor 0-2 and then to a classifier K-2 and then to a third conveyor C3. Classifiers K-i and K2 may be of a known type operable by solenoids N, N, which may be respectively connected as shown to contact members 32, 33 of switches 26, 26 through panel 36.

As will be apparent from the foregoing, when light stock, with movement of which rotation of drum I3 is synchronized, causes one solenoid l9 to be energized, it causes its plunger 26 to be moved axially against pins H in drum l3 shoving one or more pins axially out of its normal alignment (see Figure 4) whereby when that pin, or pins, rotates from the point actuated by plunger 20 to the switch 26 on the opposite side of the drum it, or they, will engage and depress switch 26 (Figure 5) and establish and maintain contact to a solenoid N operating a light-sheet classifier, such as K-2. When heavy stock causes the classifier control meter to energize the other solenoid 19, its plunger 20 pushes one or more pins H out of line in the opposite direction and these at a determinate later interval will similarly operate the other switch 26 resulting in actuation of classifier K-l.

As shown in Figure 3, the drum I3 is driven counter-clockwise, the pins I being normally aligned by cams 35 being adjusted out of line by plungers 20, as described, such adjusted pins turning to points where they actuate one or the other of switches 23 and then being realigned as the drum carries the pins between cams 35.

Modifications of the invention may be resorted to without departing from the spirit thereof or the scope of the appended claims.

What is claimed is:

1. The combination with means for continuously feeding strip material, and means at one point respecting the feeding means for continuously determining the condition of said strip material, of means at another point respecting the feeding means for segregating off-condition material from material meeting predetermined specifications, and means for controlling said segregating means, said controlling means comprising a member driven in synchronism with said feeding means and having thereon a plurality of closely-spaced shiftable elements, means at one point respecting said driven member and operable into the path of said elements on said driven member when off-condition material passes said first point along the feeding means, said elements and said element-operating means being so constructed and arranged that the elements will be shifted in succession on said driven member so long as the off-condition obtains, said element-operating means being normally maintained out of the path of said elements, means at another point respecting said driven member and arranged in the path of shifted elements and operable by said shifted elements and continuously maintained in operation so long as a succession of shifted elements pass for operating said segregating means, said element-operating means and the segregator-operating means being so arranged respecting the driven element as to time operation of the segregating means with passing oi the tested strip material through the segregating means to segregate the off-condition material, and means for continuously returning the shifted elements to their normal positions on the driven member prior to their re-passage of the element-operating means.

2. The combination as set forth in claim 1, said elements extending from opposite sides of said driven member and being shiftable in opposite directions, and element-operating means being arranged at opposite sides of said driven member to be shifted into the path of said elements, said element-operating means being responsive to different off-conditions of said strip material, and segregator-operating means likewise at each side of said driven element, the segregating means being operable for segregating strip material of difierent off-conditions.

AARON G. LADRACH. 

